GAMS — The Solver Manuals - Available Software

110 COIN-OR
gams/usergdxname (string)
The name of the GDX file exported from the solver with the solution at the node.
(default = bchout.gdx)
gams/usergdxnameinc (string)
The name of the GDX file exported from the solver with the incumbent solution.
(default = bchout_i.gdx)
gams/usergdxprefix (string)
Prefixes to use for gams/usergdxin, gams/usergdxname, and gams/usergdxnameinc.
gams/userheurcall (string)
The GAMS command line (minus the gams executable name) to call the heuristic.
gams/userheurfirst (integer)
Calls the heuristic for the first n nodes.
(default = 10)
gams/userheurfreq (integer)
Determines the frequency of the heuristic model calls.
(default = 10)
gams/userheurinterval (integer)
Determines the interval when to apply the multiplier for the frequency of the heuristic model calls. For
example, for the first 100 (gams/userheurinterval) nodes, the solver call every 10th (gams/userheurfreq)
node the heuristic. After 100 nodes, the frequency gets multiplied by 10 (gams/userheurmult), so that for
the next 100 node the solver calls the heuristic every 20th node. For nodes 200-300, the heuristic get called
every 40th node, for nodes 300-400 every 80th node and after node 400 every 100th node.
(default = 100)
gams/userheurmult (integer)
Determines the multiplier for the frequency of the heuristic model calls.
(default = 2)
gams/userheurnewint (integer)
Calls the heuristic if the solver found a new integer feasible solution.
(default = 1)
0 . Do not call heuristic because a new integer feasible solution is found.
1 . Let SCIP call the heuristic if a new integer feasible solution is found.
gams/userheurobjfirst (integer)
Similar to gams/userheurfirst but only calls the heuristic if the relaxed objective value promises a significant
improvement of the current incumbent, i.e., the LP value of the node has to be closer to the best bound
than the current incumbent.
(default = 0)
gams/userjobid (string)
Postfixes to use for gams/gdxname, gams/gdxnameinc, and gams/gdxin.
gams/userkeep (integer)
Calls gamskeep instead of gams
(default = 0)